package com.ruoyi.generator.util;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import org.apache.velocity.VelocityContext;
import com.alibaba.fastjson.JSONObject;
import com.ruoyi.common.constant.GenConstants;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.generator.config.GenConfig;
import com.ruoyi.generator.domain.GenTable;
import com.ruoyi.generator.domain.GenTableColumn;

public class VelocityUtils{
	/** 项目空间路径 */
	private static final String PROJECT_PATH = "main/java";

	/** mybatis空间路径 */
	private static final String MYBATIS_PATH = "main/resources/mapper";

	/** html空间路径 */
	private static final String TEMPLATES_PATH = "main/resources/templates";

	/**
	 * 设置模板变量信息
	 * 
	 * @return 模板列表
	 */
	public static VelocityContext prepareContext(GenTable genTable){
		String moduleName = genTable.getModuleName();
		String businessName = genTable.getBusinessName();
		String packageName = genTable.getPackageName();
		String tplCategory = genTable.getTplCategory();
		String functionName = genTable.getFunctionName();

		VelocityContext velocityContext = new VelocityContext();
		velocityContext.put("tplCategory", genTable.getTplCategory());
		velocityContext.put("tableName", genTable.getTableName());
		velocityContext.put("functionName", StringUtils.isNotEmpty(functionName) ? functionName : "【请填写功能名称】");
		velocityContext.put("ClassName", genTable.getClassName());
		velocityContext.put("className", StringUtils.uncapitalize(genTable.getClassName()));
		velocityContext.put("moduleName", genTable.getModuleName());
		velocityContext.put("businessName", genTable.getBusinessName());
		velocityContext.put("basePackage", getPackagePrefix(packageName));
		velocityContext.put("packageName", packageName);
		velocityContext.put("author", genTable.getFunctionAuthor());
		velocityContext.put("datetime", DateUtils.getDate());
		velocityContext.put("pkColumn", genTable.getPkColumn());
		velocityContext.put("importList", getImportList(genTable.getColumns()));
		velocityContext.put("permissionPrefix", getPermissionPrefix(moduleName, businessName));
		velocityContext.put("columns", genTable.getColumns());
		velocityContext.put("table", genTable);
		if(GenConstants.TPL_TREE.equals(tplCategory)){
			setTreeVelocityContext(velocityContext, genTable);
		}
		return velocityContext;
	}

	public static void setTreeVelocityContext(VelocityContext context, GenTable genTable){
		String options = genTable.getOptions();
		JSONObject paramsObj = JSONObject.parseObject(options);
		String treeCode = getTreecode(paramsObj);
		String treeParentCode = getTreeParentCode(paramsObj);
		String treeName = getTreeName(paramsObj);

		context.put("treeCode", treeCode);
		context.put("treeParentCode", treeParentCode);
		context.put("treeName", treeName);
		context.put("expandColumn", getExpandColumn(genTable));
		if(paramsObj.containsKey(GenConstants.TREE_PARENT_CODE)){
			context.put("tree_parent_code", paramsObj.getString(GenConstants.TREE_PARENT_CODE));
		}
		if(paramsObj.containsKey(GenConstants.TREE_NAME)){
			context.put("tree_name", paramsObj.getString(GenConstants.TREE_NAME));
		}
	}

	/**
	 * 获取模板信息
	 * 
	 * @return 模板列表
	 */
	public static List<String> getTemplateList(String tplCategory){
		List<String> templates = new ArrayList<String>();
		templates.add("vm/java/domain.java.vm");
		templates.add("vm/java/mapper.java.vm");
		templates.add("vm/java/service.java.vm");
		templates.add("vm/java/serviceImpl.java.vm");
		templates.add("vm/java/controller.java.vm");
		templates.add("vm/xml/mapper.xml.vm");
		if(GenConstants.TPL_CRUD.equals(tplCategory)){
			templates.add("vm/html/list.html.vm");
		}else if(GenConstants.TPL_TREE.equals(tplCategory)){
			templates.add("vm/html/tree.html.vm");
			templates.add("vm/html/list-tree.html.vm");
		}
		templates.add("vm/html/add.html.vm");
		templates.add("vm/html/edit.html.vm");
		templates.add("vm/sql/sql.vm");
		return templates;
	}

	/**
	 * 获取文件名
	 */
	public static String getFileName(String template, GenTable genTable){
		// 文件名称
		String fileName = "";
		// 包路径
		String packageName = genTable.getPackageName();
		// 模块名
		String moduleName = genTable.getModuleName();
		// 大写类名
		String className = genTable.getClassName();
		// 业务名称
		String businessName = genTable.getBusinessName();

		String javaPath = PROJECT_PATH + "/" + StringUtils.replace(packageName, ".", "/");
		String mybatisPath = MYBATIS_PATH + "/" + moduleName;
		String htmlPath = TEMPLATES_PATH + "/" + moduleName + "/" + businessName;

		if(template.contains("domain.java.vm")){
			fileName = StringUtils.format("{}/domain/{}.java", javaPath, className);
		}else if(template.contains("mapper.java.vm")){
			fileName = StringUtils.format("{}/mapper/{}Mapper.java", javaPath, className);
		}else if(template.contains("service.java.vm")){
			fileName = StringUtils.format("{}/service/I{}Service.java", javaPath, className);
		}else if(template.contains("serviceImpl.java.vm")){
			fileName = StringUtils.format("{}/service/impl/{}ServiceImpl.java", javaPath, className);
		}else if(template.contains("controller.java.vm")){
			fileName = StringUtils.format("{}/controller/{}Controller.java", javaPath, className);
		}else if(template.contains("mapper.xml.vm")){
			fileName = StringUtils.format("{}/{}Mapper.xml", mybatisPath, className);
		}else if(template.contains("list.html.vm")){
			fileName = StringUtils.format("{}/{}.html", htmlPath, businessName);
		}else if(template.contains("list-tree.html.vm")){
			fileName = StringUtils.format("{}/{}.html", htmlPath, businessName);
		}else if(template.contains("tree.html.vm")){
			fileName = StringUtils.format("{}/tree.html", htmlPath);
		}else if(template.contains("add.html.vm")){
			fileName = StringUtils.format("{}/add.html", htmlPath);
		}else if(template.contains("edit.html.vm")){
			fileName = StringUtils.format("{}/edit.html", htmlPath);
		}else if(template.contains("sql.vm")){
			fileName = businessName + "Menu.sql";
		}
		return fileName;
	}

	/**
	 * 获取项目文件路径
	 * 
	 * @return 路径
	 */
	public static String getProjectPath(){
		String packageName = GenConfig.getPackageName();
		StringBuffer projectPath = new StringBuffer();
		projectPath.append("main/java/");
		projectPath.append(packageName.replace(".", "/"));
		projectPath.append("/");
		return projectPath.toString();
	}

	/**
	 * 获取包前缀
	 * 
	 * @param packageName 包名称
	 * @return 包前缀名称
	 */
	public static String getPackagePrefix(String packageName){
		int lastIndex = packageName.lastIndexOf(".");
		String basePackage = StringUtils.substring(packageName, 0, lastIndex);
		return basePackage;
	}

	/**
	 * 根据列类型获取导入包
	 * 
	 * @param column 列集合
	 * @return 返回需要导入的包列表
	 */
	public static HashSet<String> getImportList(List<GenTableColumn> columns){
		HashSet<String> importList = new HashSet<String>();
		for(GenTableColumn column : columns){
			if(!column.isSuperColumn() && GenConstants.TYPE_DATE.equals(column.getJavaType())){
				importList.add("java.util.Date");
			}else if(!column.isSuperColumn() && GenConstants.TYPE_BIGDECIMAL.equals(column.getJavaType())){
				importList.add("java.math.BigDecimal");
			}
		}
		return importList;
	}

	/**
	 * 获取权限前缀
	 * 
	 * @param moduleName 模块名称
	 * @param businessName 业务名称
	 * @return 返回权限前缀
	 */
	public static String getPermissionPrefix(String moduleName, String businessName){
		return StringUtils.format("{}:{}", moduleName, businessName);

	}

	/**
	 * 获取树编码
	 * 
	 * @param options 生成其他选项
	 * @return 树编码
	 */
	public static String getTreecode(JSONObject paramsObj){
		if(paramsObj.containsKey(GenConstants.TREE_CODE)){
			return StringUtils.toCamelCase(paramsObj.getString(GenConstants.TREE_CODE));
		}
		return "";
	}

	/**
	 * 获取树父编码
	 * 
	 * @param options 生成其他选项
	 * @return 树父编码
	 */
	public static String getTreeParentCode(JSONObject paramsObj){
		if(paramsObj.containsKey(GenConstants.TREE_PARENT_CODE)){
			return StringUtils.toCamelCase(paramsObj.getString(GenConstants.TREE_PARENT_CODE));
		}
		return "";
	}

	/**
	 * 获取树名称
	 * 
	 * @param options 生成其他选项
	 * @return 树名称
	 */
	public static String getTreeName(JSONObject paramsObj){
		if(paramsObj.containsKey(GenConstants.TREE_NAME)){
			return StringUtils.toCamelCase(paramsObj.getString(GenConstants.TREE_NAME));
		}
		return "";
	}

	/**
	 * 获取需要在哪一列上面显示展开按钮
	 * 
	 * @param genTable 业务表对象
	 * @return 展开按钮列序号
	 */
	public static int getExpandColumn(GenTable genTable){
		String options = genTable.getOptions();
		JSONObject paramsObj = JSONObject.parseObject(options);
		String treeName = paramsObj.getString(GenConstants.TREE_NAME);
		int num = 0;
		for(GenTableColumn column : genTable.getColumns()){
			if(column.isList()){
				num++;
				String columnName = column.getColumnName();
				if(columnName.equals(treeName)){
					break;
				}
			}
		}
		return num;
	}
}
